Transporting and dumping vehicle



Feb. 2, v1937. G. R. DEMPSTER 2,069,697'

TRANSPQRTING AND DUMPING VEHICLE l Filed Feb. 5; 19:55 'zsneetS-sheet-l f wN, Q

Feb. 2Q 1937. G. R. DEMPsTER 2,069,697

TRANSPORTING AND DUMPING VEHICLE l 2 Sheets-Sheet 2 Filed Feb. 5, '1955 CFI Patented Feb. 2,

UNITED STATE s PATENT OFFICE 'Ihis inven'tion relates to means for transporting materials from one location to another and dumping the saine when arriving at the desired destination. t

It has heretofore been Rthe custom to mount load receiving containers on a vehicle, such as an automotive truck, deposit the material to -be transported therein, and when the vehicle reaches the desired destination, dump the material from the container; In these constructions containers form a permanehat part of the construction, and the'entire-mechanism, including the automotive vehicle, stands idle while the container is being loaded. This container may be in the form of a dumping body on a vehicle or of a scoop or other bucket permanently attached to the vehicle. In constructions of this kind the expensive automotive truck or other vehicle, together with vits driver, remain idle while the' container is being loaded, with a resultant loss in time of the driver and in the operation of the expensive truck or vehicle. f v

An object of the present invention is to conserve the time of the driverof the vehicle and\ to lgeep the vehicle vitself 'in ualmost constant operation, whereby at a reduced c ost a largely increased amount of material may be transported by the vehicle ina givenspace of time.

With this object in view, an upwardly inclined,

and preferably forwardly inclined track ory way is vmounted on .a chassisv or other part of 'the framework of a vehicle, preferably an automotive vehicle, such as a truck or tractor. Detachable buckets or other-loadreceiving containers are provided' tomove upward and downward 4along said track or way, and a piston and cylinder are operatively and detachably connected to said bucket or container for lelevating the same with its container along said'track or way. Means, such as a rotary pump are provided for forcing liquid in said cylinder from one'side of the piston to the other, said means vbeing operated by a suitable motor, preferably -themotorz of the automotive vehicle when such is employed. By this means the bucket or container, with its load, is elevated into position to be transported from one locality to another. a valved by-pass Ifrom one end of the cylinder to theother, 'and around the piston therein, is provided, a'nd when it is desired to deposit the container with its load in a given locality, the by-pass valve is opened and the container de scendsv along said track or way by reason of its own weight, the speed of descent beingcontrolled by the passage of the liquid in the cylinder from one side of the piston to the other thereon '.Ihis

operation is accomplished without the pump and motor for operating the same. If instead-of depositing the container with its load, it is desired to dump th container, means are-provided for turning the container on its downward move- 5 ment into a position to deliver the load, which means are preferably controlled by the driver of the vehicle from his seat. A

By this means several containers maybe in one locality," such as a stoner quarry, where they are 10 loaded by laborers, while the'vehicle is transporting a loaded container to its destinationand returning.` Upon returning With'the eipty con- -tainer the same is detached from the vehicle and left to be reloaded While another loaded con- 15 tainer is attached tothe vehicle in a few moments,

and it, in turn, 'is transported to the desired locality.' f

The inventive idea iscapable of receiving a variety of mechanical expressions, one of which 2'0 for the purpose` of illustrating the invention, is shown inthe accompanyingv drawings, but it is to be expressly understood that such drawings are illustrative" only and are not designed to define the limits of the invention, reference being hadP 25 to theappende'd claims for this purpose.

Fig. 1 .is a' perspective view with parts in position for ,transporting the load; "F Fig. 2 is a brokensperspective detail of a modication; e

Fig. 3 is a detail showing the means of l connect- 30 ing the cable to the container carryingbar;

' Fig. 4 is a broken detail of one end ofthe container; p

Fig. 54s a plan view of the chassis-and the forward cylinder (in section) with its' operating con- 'nections;

,Fig. 6 is a partial side elevation showing the parts in dumping position and i Fig. 7 is a broken side elevation-illustrating the 40 mannerof nesting the containers.

-, e Referring to' thevdrawings in which like reference numerals indicatey likeparts throughout the several views., I is a frame. of a vehicle, here shown as the chassis of an automotive truck,'-45

2+2 indicates two uprights, preferably in the l form of angle bars, secured to the lower part of' the rear'end of the chassis` l',`and preferably somewhat inclined toward the Afront part of the vehicle; while 3 indicatestwo brace bars, also 50 preferably in the form of angle bars, vwhich areV secured at their lower'ends to the opposite-sides of the chassis. Preferably the :lower ends -of fthe,I f

uprights 2-'2 are' slightly beveled at their lower ends as shown at 2'-2 ',Flg. 1. A shaftl passes 55 through the upper ends of the uprights 2-2 and the bars 3 3, vthe ends of the shaitll extending well out beyond the two uprights 2 2. Two sheaves 5 5 are mounted to turn on the shaft 4,

5 one adjacent each of the uprights 2 2, and a third sheave 6 is mounted midway betweenf'the uprights 2 2, on a bar connecting said nprights. l-There isalso mounted to turn in bearings on the lower part of the brace bars 3 3 a shaft 1, and 10. keyed to the ends of the shaft 1, preferably just outside of the bars are two drums 3 3, while midway between the brace bars 3-3'is a third drum 3, also keyed to the shaft 1. Mounted on` the chassis I, near the forward portion thereof, between the lower. ends of the brace bars 3-3 and beneath the shaft 1, is a cylinder I3 having therein a piston II (see Fig. 5) and achargeof `oil or other iluid. The piston rod I2 projects Y rearward from said cylinder and has thereon a` zo forked bearing I3 for a shaft supporting a sheave I3. A cable I5 is secured at one end I3' to any suitable part of the vehicle forward of the sheave I3 and passes around said'sheave and is wound around thev drum 3 for a suitable number of 25 turns, the end of said cable being fastened to the drum. Aconduit Itisconnectedtotherearend' of the cylinder `III and leads to a rotary pump II from which a conduit I3' leads to the forward end of the cylinder, the two conduits entering 3o the cylinder at opposite sides of the piston II when the piston is in its forward position. Two cables' 3 3 are wound'aroundthe respective drums 3 3 and pass over the sheaves 5 3 andv are connected to a cross bar I3 resting against 35 the rear face of the track or way composed of the two uprights 2 2, said bar in its uppermost position being somewhat below the ,sheaves 5 5.'

'40 ber of perforations 2li. This container I3 has its front wall I9' (the one toward the front Vside of the vehicle) resting against -the track or way composed of the uprights 2 2, and at its opposite end portions itis connected to the end portions 43 of the bar I8 by any suitable means, here shown as chains 2I 2I, secured at one end tothe bar 'III and having at the lower end a hooklike portion 22 to which, when the parts are in position to elevate the container, engagepins 23 project- 50 ing outward from the end walls I9" of the container. Preferably these pins are in the form of bolts which pass through the end walls with a small section of piping on that vportion of -the bolt.

which tis exterior tothe container and secured 5`5 bymeahs of a nut/.bearing against the interior face of the end wal1.` Preferably also a suitable brace 24 is provided for each of these pins. Preferably the. front and rear walls of the container flare outward and upward,.the flare of the rear `60 wall considerably exceeding that of Vthe front wall; and preferably also the end walls flare slightly outward from the bottom of the container upward. Projecting from each end of the container, near the `bottom thereof -are two pins '65 or bons 25-25 which, nke the p1ns23,are 1n che are or auch a length umtwnen the container is in its uppermost position, as shown in Pig. l, and i therodsareswungrearward.thehooklikepor tion23'willbeunderthepins2iontheends of the container. Normally the rods 2B-23 occupy the position sbownin Pig. 1,' that is withdrawn from the pins 23, dependence being placed leitherupongravityoruponaspring21tohold them in their ywithdrawnv position. The rods 23 23,are connected together by a bar 23e!- nieuwezsisforwawaorniesneavemandav line or cable'23 isconnected to thebarNandpassesoverthesheavel ward to a point in proximity with the driver's seat, and is connected to a suitable lever. means of which the iriverl can exert a theline23 toswingtheharnandwith'itl rods23.-23rearwardtothepositionshownin Eig.6,andifthisisdoneatthe.timewh Y container is in its uppermost position'as shown in'Plg. 1, the hook-like portion 23' on each rod 23 will engage under the pins 23-23 as the container is lowered.

When the vehicleis backed upinproximity to a loaded container and the chains 2I are securedtothepins22,thedriverthrowsthepump I1 into operative connection with the motor through the clutch. 3|, and the liquid, preferably oil, is forced by the pump from the rear end of the cylinder to ilie opposite side of the piston. that' is, .to the front end of the cylinder, thus forcing the piston rearward, which, operating 4 through the cable I3, revolves the. drum 3. and

with it the shaft 'l and the two drums 3, which?l twovlatter wind up the cables 3 and thus serve to raise the container I3 along the track or way composed of the two uprights 2-2.

A by-pass conduit 32 is provided leading from the front end of the cylinder to the lrear end thereof, and in this by-pass conduit is interposed,

to throw the hooks 23" of the rods 23 under the pins 25, throws out the clutch 3i connecting the motor of the vehiclerto the pump and then throws open the valve 33fand holdsit open. This permits theoil in the'-cylinderi0 to' pass from the forward side of the piston to the rearward sidethereof under influence of the weight ofthe load in the container andthe container starts to descend, whereupon-the hooks 28" on the rods 28 shown in Fig. 1, the operator first shifts the lever engage the pins 25,' and as the container continues toy descend undervits owngravity, itis tipped or turned from an upright position" rearward, vand when the rearward edge of 'the' container reach 0r approaches the ground, thefbottomsf: thema; v

tainer rests againstthetrack; orwayy andthe materialin the container dui'npfedniffy Si' It will be noticed -thatthe-jintake lendlo lthe` conduit i6 leading' from the cylindertovthe 4fpuiiip ,is somewhat to the rear of the. piston. when the container is in its raised'position, as shownautomaticallydsto'ps in that position, and there is no danger ofinjury to the parts by the failure of the pperator to disconnect the motor from the pump, and an unskilled laborer can readily operate the mechanism without danger of injury thereto.

v It will also be noted that dependence is'placed,.

` not upon themotor of the vehicle, with the accompanying consumption of fuel,`for controlling thelowering and dumping of the container, but

that this is accomplished by the weight of `thel 'Qdi container itself, and yet under perfectJ control, -since tl'e container cannot descend any more rapidly than is made possible'v by the passage of the oil from the front to the rear side of the piston, through the valvefcontrolled by-pass.Y

By reason of the slightly outwardly flaring end and side walls of the containers andfthe ease with which the pins may be removed therefrom, it is possible to nest a plurality of the. containers one within the other as shown in Fig. 7. This is of importance when transportinga plurality of containers from one job to another. While on the job, for example, at a'stone quarry, a plurality of containers may be placed on the ground and the stone or other material, which has to be lifted by hand, has to be raised but a very short distance by thel workmen. When the container is lled, it is picked up in the manner heretofore' described, b y the vehicle, and carried to its desy,

tination, and dumped and returned to the -quarry empty, and another loaded container immediately picked up and carried to its destination, and so on. It will thus be seen that there is no waste of the drivers time, and that an expensive truck or other vehicle is kept .in constant operation. This effects a marked lsaving over that class'. of

\ vehicles which have to stand still while the same is being loaded and then moved to the place where it is dumped, frequently as much time being consumed while .the vehicle is idle and in loading operation as. is lemployed in transportation to its destination. ."i

It will also be noted that the structure is largely foolproof, since the loaded container cannot be raised, to an undue or injurious position, and in lowering the same. the rate at which it moves ldownward is under absolute vcontrol: Further it will be seen that when it is desired to wash the container by-ushing it with water, the dirty. water readily escapes through the perforations 20. It will be readily appreciated that, if, desired, the'drums 8-8 and 9 may be keyed to'the shaft l (see Fig. 2 and the sheaves 5--5 mounted to turn on the shaft 1, and in this case the shaft -l will be revolvably mounted in the upper ends of the uprlghts 2- 2, while the shaft I is fixed in its bearings. The two constructions, however, are mere'mec'hanical equivalents.

:Al convenient and preferable means of con- '.structing the bar I8 is shown in Fig. 3 in which a wedge-shaped part I8' enters a. correspond- .inglyv shaped slot I8" in the bar I8, and when the cable 8' passes around the' wedge and the wedge inserted in position, the greater the stress the we'ge ls' operate 'to pinch thercame m' the slot I3".

It is often desirable to spread the material bel` ing dumped from the container-to a uniform depth. along the ground, and for the purpose of accomplishing this result, thecontainer I9 maybe Vprovided with'a cover IS'." hinged to the container at the forward side thereof, that is the side adjacent the front of the vehiclev when the foontainer is held in its elevated position on the track vor way. This'cover is preferablyprovided with end flaps 'or retainers IFS, (Fig. 6) one at each end of the cover, for the purpose of preventing the material being dumped from spreading sidewise. 'I'he cover is provided with means for adjusting the extent .to whichit may be opened during the dumping, and thereby controlling the amount ofmaterial that will pass therefrom dur- Y ing a given time. 'I'his consists of a series of perforations I9Pfin the end aps of the cover, through which any suitable retaining pin I9 projects into a corresponding hole or perforation inthe endA vention, and such modifications as fall within/ the appended claims are intended to be covered thereby. j

Having thus described the invention, what is claimed is:

1. 'Ihe combination of; a vehicle frame, an engine thereon, an upwardly extending track or way mounted on the rear of said frame, a cylinder with a piston therein mounted on said frame and containing a liquid, a pump op atively connected to said engine and forcing the said liquid from one side of said piston to the other, a valved by-pass around the piston, a load-receiving containermovable alongsaid track or way, a bar slidable along said track or way, means operay sol ' 2.` The combustion of a vehicle frame, an engine thereo anupwardly extending track or way mount on the rear of said frame, a cylinde r with a pi ton therein mounted on said frame a liquid, a pump operatively congine Aand forcing the said liquid 'from one side of said piston to the other, a valved;

by-pass around the piston, a 'load-receiving container movable along said track orway, a. bar slidable along said track orway, a pair of cables connected to said bar and operated by said pis-` ton,andmeans detachably connecting said bar to said container.

3. The combination of a vehicle. `an upwardly extending track or way mounted thereon, a con tainer mountedA to move along said track or way, a shaft turning in bearings on said vehicle, a ydrum fast on .said shaft, a cable secured at one end to'said drum, a sheave mountedinear the top lofsaxidtrack or way and over which said cable passes, means detachably securing the other vend of said cable to said container, a cylinder, a power driven piston and piston rod therein, a s heave on the outwardlyl projecting end of said rod, and

a cable secured at one end to the vehicle and passing over said` last mentioned' sheave and around a second drum secured to thesamei'shaft as said first mentioned drum. 4. The combination'of a vehicle, an upwardly extending track orway mounted thereon, a cony 4tainer mounted to move along said track or way,

a shaft turning in bearings on said vehicle. a x plurality of drums fast one oneach end of said tioned drums.

shaft, a plurality of cables one secured to each drum and windable thereon, a pair of sheaves mounted near the top of .said track or way one on each side thereof and over which said cables pass,

means detachably securing the other end'o'f each cable to opposite sides of 'the container, a cylinder. a power driven piston and piston rod therein, a sheave on the outwardly projecting end of said rod. andra cable secured at one end to the vehicle and passing over the sheave on -said rod and around a drum secured to the same shaft as said first mentioned drums. Y

5. The combination of a-vehicle, an upwardly extending track or way mounted thereon, a container mounted to move along vsaid track or way,--

a shaft turning in bearings on said vehicle, a drum fast on said sh'aft,a cable secured at one end to said drum, a sheave mounted near the top of said track or way and over which said cable passes, means detachably securing the other end of said cable tol said container, a' cylinder, a power driven piston and piston rod therein, a valved by-'pass from one end of said cylinder to the other end, a sheave on the outwardly projecting end of said rod, and a cable secured at one end to the vehicle and passing over said last mentioneisheave and around a second drum secured Vto the same shaft as said first mentioned drum.

6. The -combination of a vehicle, an upwardly extending track or way mounted thereon, a conl tainer mounted to move along said track or way, a shaft turning in bearings on'said vehicle, a plurality of drumsfast one on each end ofsaid shaft. .a plurality of cables one secured to eachl drum and windable thereon, a pair of sheaves 7. The combination of a vehicle, an upwardly 4extending track or way mounted thereon, a container mounted to move along said track or way, a.shaft in bearings on aidvehicle, a plurality of drums lfast one on each end ofsaid shaft, a plurality of cables one secured to each drum and windable thereon, a pair of sheaves mounted near the top of said track or way one.V

on each side thereof and over which said cables pass, means detaehably securing the other endv of each cable to opposite sides of the container and near the top thereof, means controllable by` lng said ward .along the operator land for engaging vcontainer when the same moves d said track or way, a cylinder. a power driven piston and piston rod therein, a sheave on the outwardlyv projecting end of said rod, and a cablesecuredatoneendtothevehicleandpass-v ing ,over the sheave, on said rod and around a drum secured on the sameshaft as said first mentioned drums.

8. 'I'he combination of a vehicle, an upwardly extending track or way mounted thereon, a cons tainer mounted to move along said track or way,

` a shaft turning in bearings oui said vehicle, s

plurality of drums' fast one on each'end of said shaft. a plurality of cables one secured to each drum and windable thereon, a'pair of sheaves loA mounted near the top'of said or way one on each side thereof and over which said cailles pass, means detachably securing the other end of eachcable to opposite sides of the container and near the top thereof. means `controllable b! i5 the operator for engaging and ltipping said (container when the same moves downward along said track or way. a 'cylinder. a powery driven piston and piston rod therein, a valved byfpsss Y fromA one end of said cylinder .to the other, a 20 sheave on the outwardly projecting end of said rod, and a cable'secured at one end to the vehicle and passing over" the sheave on said rod and around a drum secured on the same shaftv as said first mentioned drums. y A

`9. The combination of a vehicle, an upwardly extending track-or waysmounted thereon, a oontainer movable upward and downward 0n said track or way, pins projecting from said com tainer on opposite sides\and near the bottom 30 thereof and to one side of a vertical plane passing through the center of gravity of the container transversely Iof the vehicle, and a pair 0f rearwardly swinging hooks for engaging said pins when the container is in its elevated position.

10. 'Ihe combination of avehicle. an upwardly extending track or way mounted thereon, a con'- tainer movable upward and downward on Vsaid track or way, pins projecting from said containeron opposite sidesand near the bottom thereof 40 andto one'side of a vertical plane passing through the center of gravity of the container transversely of the vehiclej andA means operable from the drivers seat to swing said hooks'l into their rearward position.- l y 1l. The combination of avehicle, an upwardly extending track or way mounted thereon, a container movable up and down on said track or way. a cylinder, a piston therein. means opera.

tively connecting said cylinder with a motor and trahsferring fluid therein from the front side of said piston'to the rear thereof, andfnieans operatively connecting said piston tothe oon- -tainer, whereby saidcontainer is elevated, a valve,u

controlled by-pass from the front side of .said 5g piston, to the rear side thereof, whereby vthe container is lowered by its own weight.

12. The combination of a vehicle, an upwardly extending track or way mounted thereon, a-

containerl movable up and down along said track 00I or way,.la liquid containing cylinder. a piston and piston rod therein, a conduit leadingfrom a' point in the cylinder just to the rear of the plston on its extreme outward stroke to apoint-in the cylinder tothe rear of the piston when in 5 its innermost position, means forcing the liquid from the outermost side of the piston to the innemesi side thereof. a valved condmt lemma from they cylinder at the outermost s ideof' the piston to thecylinder at a point at the rear of operated on the outward stroke of the piston to raise said containeralongsaid track or way.v

vwherebysaid piston sctsasspowerdeviceto" thejinnermost position of the piston, and means raise said container and a brake tocontrol the downward vmovement thereof.

13. I'he combination of-'a vehicle, an upwardly f extending track or way mounted on the rear thereof, a container movable thereon, a cylinder, a liquid. and a piston and piston rod therein, power means forcing the liquid from the front side of the piston to the rear thereof and imparting' an outward movement to the piston rod,

means connected to the container and operated by the piston on its outward stroke to` raise the container along said track or way, and a valved by-pass permitting the return of the liquid from the rear side of the piston to the front side thereof, wherebyY the container is lowered by its own weight.

14`. The combination o! a vehicle, an upwardly extending forwardly inclined track or way 0n the rear end thereof, a container movablev along said track or way and tiltable for unloading, a cover hinged to the upper edge of the container when in unloading position, adjustable means limiting the opening movement of said cover, a

cylinder, a piston therein, means operatively connecting said cylinder with a motor on said vehicle and transferring fluid therein from one side to the other'lofvsaid piston, means operatively connecting the piston to said container, and a valve-controlled by-pass from one side to the other of said piston.

15. The combination of a vehicle frame, an engine, an upwardly extending track or way mounted on said frame, a container movablealong said track or way, a cylinder with a piston therein and mounted on said frame and containing a liquid, means operatively connecting said piston and container, means operated by said engine and forcing the liquid in said cylinder from one side of said piston to the other, whereby said container is elevated, a by-pass connecting parts of'said cylinder on opposite sides of said piston, and a valve controlling said b ypass, whereby said container is lowered by its own weight.

- GEORGE R. DEMPSTER 

